I can't speak for anyone but us - but our process is EXACTLY
like they did it originally.
Silk-screened on flat glass one color at a time . . .
then heated in a kiln until the glass gets 'plastic', then gravity slumps the glass into a SS mold.
Pad-printing is not an option as the frit is too thick for that process - and it doesn't deposit enough material to make the colors opaque.
We don't produce the small globes - but my opinion from looking at them, is that they are fired-on decals on glass bodies.
Experience is the best guide for spotting fakes. The newer reproducers use much finer screens that a lot of the old lens manufacturer's did. And the 'white' on the back is usually much smoother than what is normally on an original.
Later . . .
Always buying Ethyl Globes, Ethyl Single Lenses & Misc Ethyl Items.